CBS Announces Episode 4.03 Posted September 20, 2010

CBS has announced the details for the third episode of the new season of The Big Bang Theory. Laurie Metcalf and Mayim Bialik guest star in the episode.

The Zazzy Substitution - The guys are concerned as Sheldon searches for an alternative to human companionship, on THE BIG BANG THEORY, Thursday, Oct. 7 (8:00-8:31 PM, ET/PT) on the CBS Television Network.